Write the subtraction sentence – up to 18
Key points :
Definition of Subtraction:
- Explain that subtraction means taking away a certain number from a larger number.
- Use terms like “minus,” “less,” and “take away.”
Subtraction Sentence Format:
- A subtraction sentence is written in the form: A – B = C, where:
- A is the starting number (minuend).
- B is the number being subtracted (subtrahend).
- C is the result (difference).
Examples:
- Use simple examples to demonstrate:
- 7 – 3 = 4: Here, 7 is the total, 3 is taken away, and 4 is left.
- 10 – 5 = 5: 10 minus 5 equals 5.
Learn with an example
An actress owns 11 pairs of shoes. 7 of those pairs are her favorite color, which is teal. How many pairs of shoes does the actress own that are not teal?
Write a subtraction number sentence that fits the story.
Write a subtraction number sentence. Subtract the number of teal pairs of shoes from the total number of pairs. First, write:
11 − 7
Now complete the subtraction number sentence by finding the difference between 11 and 7:
11 − 7 = 4
Kimi’s mother wants to make 13 sandwiches for the class picnic. She has already made 7 sandwiches. How many more sandwiches does she need to make?
Write a subtraction number sentence that fits the story.
Write a subtraction number sentence. Subtract the number of sandwiches she has already made from the total number of sandwiches. First, write:
13 − 7
Now complete the subtraction number sentence by finding the difference between 13 and 7:
13 − 7 = 6
Brandon is working on some maths homework that is due tomorrow. Yesterday, he completed 6 problems. There are 15 problems all together. How many problems does Brandon have left to finish today?
Write a subtraction number sentence that fits the story.
Write a subtraction number sentence. Subtract the number of finished problems from the total number of problems. First, write:
15 − 6
Now complete the subtraction number sentence by finding the difference of 15 and 6:
15 − 6 = 9
Let’s practice!🖊️
